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How you can Migrate from ESLint to Oxlint

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ESLint has been the usual for over a decade. It’s mature, battle-tested, and extremely customizable with an enormous ecosystem of plugins and laws.

It has turn out to be an crucial device in huge JavaScript and TypeScript tasks. It catches mistakes and assists in keeping your code constant.

Oxlint vs ESLint comparison

However as tasks develop, ESLint can turn out to be sluggish and resource-heavy. What must be a snappy comments loop steadily turns right into a bottleneck, slowing builders and riding up CI/CD prices.

Input Oxlint.

What’s Oxlint?

Oxlint is a high-performance linter for JavaScript and TypeScript constructed totally in Rust.

Its function is to create a easy toolchain this is immediate, light-weight, and simple to make use of. With 0 setup required, Oxlint comes able to catch not unusual mistakes and redundant code proper out of the field.

Listed here are one of the most key options that make Oxlint a wonderful selection to ESLint:

Function ESLint Oxlint
Core Era Node.js Rust
Execution Type Essentially Unmarried-Threaded Parallelized, Multi-Core Scaling
Configuration Calls for specific configuration for capability 0 configuration required

Now, how do you in truth transfer from ESLint to Oxlint?

Fortuitously, the method is beautiful simple.

We’ll stroll during the steps for environment it up, changing ESLint to your workflow, and ensuring your workforce will get the functionality spice up with out dropping the guardrails you depend on.

Migrating Present Mission

Those steps suppose that you have already got ESLint arrange to your venture and that it has an ESLint flat config report.

To get began, you’ll run:

npx @oxlint/migrate eslint.config.mjs

After operating the migration command, you must see a brand new report referred to as .oxlintrc.json to your venture listing. This report comprises the migrated configuration out of your ESLint flat config report.

Oxlint configuration file example

Now, you’ll run the oxlint CLI to your venture.

npx oxlint@newest

This may occasionally lint your venture the usage of the foundations outlined within the .oxlintrc.json report. On this case, it looks as if there’s one thing that must be fastened in probably the most venture information.

Oxlint CLI execution results

However, if you would like set up it as a dev dependency, you’ll run:

npm set up --save-dev oxlint

Then, you’ll upload a script for your package deal.json:

{
    ...
    "scripts": {
        "lint": "oxlint"
        ...
    }
}

Now, you’ll merely run the linter with:

npm run lint

Dealing with Unsupported Laws

Oxlint helps quite a lot of laws which come with the core ESLint laws themselves, typescript, and eslint-plugin-react.

Alternatively, there can also be some laws that aren’t but applied, as proven underneath:

Oxlint unsupported ESLint rules

When you stumble upon any unsupported laws all over the migration procedure, like the ones proven above, and you continue to need to retain those laws to your venture, you’ll use eslint-plugin-oxlint as a substitute.

This permits you to proceed the usage of your present ESLint laws whilst profiting from Oxlint’s functionality advantages.

To put in the plugin, you’ll run:

npm set up --save-dev eslint-plugin-oxlint

After it’s been put in, you’ll upload the foundations from the up to now generated report for your ESLint config report:

import oxlint from 'eslint-plugin-oxlint';

export default [
  ..., // Load other ESLint plugins.
  ...oxlint.buildFromOxlintConfigFile('./.oxlintrc.json'), // Load rules from Oxlint config file.
];

Subsequent, replace the lint script to your package deal.json to incorporate operating each oxlint and eslint:

{
  "scripts": {
    "lint": "npx oxlint && npx eslint"
  }
}

This manner, you’ll nonetheless use ESLint for the unsupported laws whilst profiting from Oxlint’s velocity for the remainder of the code linting wishes.

ESLint plugin for Oxlint integration

Wrapping Up

Switching from ESLint to Oxlint isn’t with reference to converting gear. It’s about optimizing your workflow and decreasing the ache of sluggish linting.

ESLint remains to be robust with its wealthy ecosystem, however Oxlint takes a recent way via specializing in functionality and ease proper out of the field.

Inbuilt Rust and designed with a zero-config setup, Oxlint will provide you with lightning-fast linting that scales even in huge tasks.

I’d counsel giving it a check out in a few of your small to medium-sized tasks. You could be stunned at how a lot sooner and smoother your construction procedure feels.

The put up How you can Migrate from ESLint to Oxlint gave the impression first on Hongkiat.

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